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Finding the Fourth Proportional to 265,783.60, 398,675.40 and 263,450.80

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Solution

The fourth proportional to 265,783.60, 398,675.40 and 263,450.80 is: 395,176.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,783.60 : 398,675.40 = 263,450.80 : x
  2. Step 2: Convert to fraction form
    265,783.60/398,675.40 = 263,450.80/x
  3. Step 3: Cross multiply
    265,783.60x = 398,675.40 × 263,450.80
  4. Step 4: Simplify right side
    265,783.60x = 105,031,353,070.32
  5. Step 5: Solve for x
    x = 105,031,353,070.32/265,783.60
  6. Step 6: Final answer
    x = 395,176.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.